

<template>
  <div class="child">
    <h2>child</h2>
    <h4>sum: {{ sum }}</h4>
    <h4 v-beauty="sum">11111111</h4>
  </div>

</template>

<script setup lang="ts" name="Child">
  import { ref} from 'vue';

  let sum = ref(0)

</script>

<style scoped>
.child {
  background-color: skyblue;

}

</style>
